<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title>列出所有使用中的输出处理程序。</title>

 </head>
 <body><div class="manualnavbar" style="text-align: center;">
 <div class="prev" style="text-align: left; float: left;"><a href="function.ob-implicit-flush.html">ob_implicit_flush</a></div>
 <div class="next" style="text-align: right; float: right;"><a href="function.ob-start.html">ob_start</a></div>
 <div class="up"><a href="ref.outcontrol.html">Output Control 函数</a></div>
 <div class="home"><a href="index.html">PHP Manual</a></div>
</div><hr /><div id="function.ob-list-handlers" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">ob_list_handlers</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.3.0, PHP 5)</p><p class="refpurpose"><span class="refname">ob_list_handlers</span> &mdash; <span class="dc-title">列出所有使用中的输出处理程序。</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.ob-list-handlers-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">array</span> <span class="methodname"><strong>ob_list_handlers</strong></span>
    ( <span class="methodparam">void</span>
   )</div>

  <p class="para rdfs-comment">
   列出所有使用中的输出处理程序。
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.ob-list-handlers-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
    此函数将返回一个数组，数组元素是正在使用中输出处理程序名（如果存在的输出处理程序的话）。
    如果启用了<a href="outcontrol.configuration.html#ini.output-buffering" class="link">output_buffering</a> 或者在
     <span class="function"><a href="function.ob-start.html" class="function">ob_start()</a></span> 中创建了一个匿名函数，<span class="function"><strong>ob_list_handlers()</strong></span> 将返回   &quot;default output handler&quot;。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.ob-list-handlers-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-447">
    <p><strong>Example #1 <span class="function"><strong>ob_list_handlers()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #FF8000">//using&nbsp;output_buffering=On<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">ob_list_handlers</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">ob_end_flush</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">ob_start</span><span style="color: #007700">(</span><span style="color: #DD0000">"ob_gzhandler"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">ob_list_handlers</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">ob_end_flush</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">//&nbsp;anonymous&nbsp;functions<br /></span><span style="color: #0000BB">ob_start</span><span style="color: #007700">(</span><span style="color: #0000BB">create_function</span><span style="color: #007700">(</span><span style="color: #DD0000">'$string'</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'return&nbsp;$string;'</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">ob_list_handlers</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">ob_end_flush</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Array
(
    [0] =&gt; default output handler
)

Array
(
    [0] =&gt; ob_gzhandler
)

Array
(
    [0] =&gt; default output handler
)
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.ob-list-handlers-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.ob-end-clean.html" class="function" rel="rdfs-seeAlso">ob_end_clean()</a> - 清空（擦除）缓冲区并关闭输出缓冲</span></li>
    <li class="member"><span class="function"><a href="function.ob-end-flush.html" class="function" rel="rdfs-seeAlso">ob_end_flush()</a> - 冲刷出（送出）输出缓冲区内容并关闭缓冲</span></li>
    <li class="member"><span class="function"><a href="function.ob-get-flush.html" class="function" rel="rdfs-seeAlso">ob_get_flush()</a> - 刷出（送出）缓冲区内容，以字符串形式返回内容，并关闭输出缓冲区。</span></li>
    <li class="member"><span class="function"><a href="function.ob-start.html" class="function" rel="rdfs-seeAlso">ob_start()</a> - 打开输出控制缓冲</span></li>
   </ul>
  </p>
 </div>


</div><hr /><div class="manualnavbar" style="text-align: center;">
 <div class="prev" style="text-align: left; float: left;"><a href="function.ob-implicit-flush.html">ob_implicit_flush</a></div>
 <div class="next" style="text-align: right; float: right;"><a href="function.ob-start.html">ob_start</a></div>
 <div class="up"><a href="ref.outcontrol.html">Output Control 函数</a></div>
 <div class="home"><a href="index.html">PHP Manual</a></div>
</div></body></html>
